v0.12.106: @newsroom.writer: less code, and the editor's channel

Four new articles and a wording check.

• The code you do not ship: code is a liability; the worst vulnerabilities sat in features nobody needed; models make removing code safe; the minimal viable code path, and who gets paid to keep it small.
• A minimal viable browser: a small kernel and components loaded when needed, a browser for one agent as a prompt-injection defence, every extension in its own box, why Mozilla is well placed, and why the pitch is speed. It corrects the memo on Mozilla's revenue.
• Cloudflare as Lego blocks: the developer platform mapped as small blocks for non-specialists, which models stay inside, and an sgit vault on Cloudflare: read-only with no code, read-write in 83 lines, tested locally in Cloudflare's runtime with the real client.
• The editor's channel: an editor key, an editor vault, a daily pass, and five audiences with five lanes; with a brief for the vault pane's agent, admin/notes/2026-10-18__the-editors-channel.md.
• A new trail, less code, joins the first three with the minimum code below.

Wording. Superlative self-claims, such as "the clearest example I have seen", rewritten in 20 articles, in their text, graphs or summaries. admin/build/wording.py now flags them, the article README lists the rule, and the leak scan fails a commit that adds one; phrases reviewed and kept go in admin/build/wording-allow.txt.

Phones. Code blocks in articles now scroll inside themselves instead of widening the page (one rule in assets/themes/themes.css); this also fixes sgit in a CI pipeline at 390px.

Figures use the new nc-, mb-, cw- and ec- prefixes.